| Brazil/Acre | Brazil/DeNoronha | Brazil/East | Brazil/West |
| Canada/Atlantic | Canada/Central | Canada/East-Saskatchewan | Canada/Eastern |
| Canada/Mountain | Canada/Newfoundland | Canada/Pacific | Canada/Saskatchewan |
| Canada/Yukon | CET | Chile/Continental | Chile/EasterIsland |
| CST6CDT | Cuba | EET | Egypt |
| Eire | EST | EST5EDT | Etc/GMT |
| Etc/GMT+0 | Etc/GMT+1 | Etc/GMT+10 | Etc/GMT+11 |
| Etc/GMT+12 | Etc/GMT+2 | Etc/GMT+3 | Etc/GMT+4 |
| Etc/GMT+5 | Etc/GMT+6 | Etc/GMT+7 | Etc/GMT+8 |
| Etc/GMT+9 | Etc/GMT-0 | Etc/GMT-1 | Etc/GMT-10 |
| Etc/GMT-11 | Etc/GMT-12 | Etc/GMT-13 | Etc/GMT-14 |
| Etc/GMT-2 | Etc/GMT-3 | Etc/GMT-4 | Etc/GMT-5 |
| Etc/GMT-6 | Etc/GMT-7 | Etc/GMT-8 | Etc/GMT-9 |
| Etc/GMT0 | Etc/Greenwich | Etc/UCT | Etc/Universal |
| Etc/UTC | Etc/Zulu | Factory | GB |
| GB-Eire | GMT | GMT+0 | GMT-0 |
| GMT0 | Greenwich | Hongkong | HST |
| Iceland | Iran | Israel | Jamaica |
| Japan | Kwajalein | Libya | MET |
| Mexico/BajaNorte | Mexico/BajaSur | Mexico/General | MST |
| MST7MDT | Navajo | NZ | NZ-CHAT |
| Poland | Portugal | PRC | PST8PDT |
| ROC | ROK | Singapore | Turkey |
| UCT | Universal | US/Alaska | US/Aleutian |
| US/Arizona | US/Central | US/East-Indiana | US/Eastern |
| US/Hawaii | US/Indiana-Starke | US/Michigan | US/Mountain |
| US/Pacific | US/Pacific-New | US/Samoa | UTC |
| W-SU | WET | Zulu |
在此请不要使用任何时区列表（除 UTC 外），仅用于向后兼容。
If you disregard the above warning, please also note that the IANA timezone database that provides PHP's timezone support uses POSIX style signs, which results in the Etc/GMT+n and Etc/GMT-n time zones being reversed from common usage.
For example, the time zone 8 hours ahead of GMT that is used in China and Western Australia (among other places) is actually Etc/GMT-8 in this database, not Etc/GMT+8 as you would normally expect.
Once again, it is strongly recommended that you use the correct time zone for your location, such as Asia/Shanghai or Australia/Perth for the above examples.